| 1 | /* uipc_proto.c 4.22 82/06/20 */ |
| 2 | |
| 3 | #include "../h/param.h" |
| 4 | #include "../h/socket.h" |
| 5 | #include "../h/protosw.h" |
| 6 | #include "../h/mbuf.h" |
| 7 | #include "../net/in.h" |
| 8 | #include "../net/in_systm.h" |
| 9 | |
| 10 | /* |
| 11 | * Protocol configuration table and routines to search it. |
| 12 | * |
| 13 | * SHOULD INCLUDE A HEADER FILE GIVING DESIRED PROTOCOLS |
| 14 | */ |
| 15 | |
| 16 | /* |
| 17 | * Local protocol handler. |
| 18 | */ |
| 19 | int piusrreq(); |
| 20 | |
| 21 | /* |
| 22 | * TCP/IP protocol family: IP, ICMP, UDP, TCP. |
| 23 | */ |
| 24 | int ip_output(); |
| 25 | int ip_init(),ip_slowtimo(),ip_drain(); |
| 26 | int icmp_input(); |
| 27 | int udp_input(),udp_ctlinput(); |
| 28 | int udp_usrreq(); |
| 29 | int udp_init(); |
| 30 | int tcp_input(),tcp_ctlinput(); |
| 31 | int tcp_usrreq(); |
| 32 | int tcp_init(),tcp_fasttimo(),tcp_slowtimo(),tcp_drain(); |
| 33 | int rip_input(),rip_output(); |
| 34 | |
| 35 | /* |
| 36 | * IMP protocol family: raw interface. |
| 37 | * Using the raw interface entry to get the timer routine |
| 38 | * in is a kludge. |
| 39 | */ |
| 40 | #include "imp.h" |
| 41 | #if NIMP > 0 |
| 42 | int rimp_output(), hostslowtimo(); |
| 43 | #endif |
| 44 | |
| 45 | /* |
| 46 | * PUP-I protocol family: raw interface |
| 47 | */ |
| 48 | #include "pup.h" |
| 49 | #if NPUP > 0 |
| 50 | int rpup_output(); |
| 51 | #endif |
| 52 | |
| 53 | /* |
| 54 | * Sundries. |
| 55 | */ |
| 56 | int raw_init(),raw_usrreq(),raw_input(),raw_ctlinput(); |
| 57 | |
| 58 | struct protosw protosw[] = { |
| 59 | { SOCK_STREAM, PF_UNIX, 0, PR_CONNREQUIRED, |
| 60 | 0, 0, 0, 0, |
| 61 | piusrreq, |
| 62 | 0, 0, 0, 0, |
| 63 | }, |
| 64 | { SOCK_DGRAM, PF_UNIX, 0, PR_ATOMIC|PR_ADDR, |
| 65 | 0, 0, 0, 0, |
| 66 | piusrreq, |
| 67 | 0, 0, 0, 0, |
| 68 | }, |
| 69 | { SOCK_RDM, PF_UNIX, 0, PR_ATOMIC|PR_ADDR, |
| 70 | 0, 0, 0, 0, |
| 71 | piusrreq, |
| 72 | 0, 0, 0, 0, |
| 73 | }, |
| 74 | { SOCK_RAW, PF_UNIX, 0, PR_ATOMIC|PR_ADDR, |
| 75 | 0, 0, 0, 0, |
| 76 | piusrreq, |
| 77 | 0, 0, 0, 0, |
| 78 | }, |
| 79 | { 0, 0, 0, 0, |
| 80 | 0, ip_output, 0, 0, |
| 81 | 0, |
| 82 | ip_init, 0, ip_slowtimo, ip_drain, |
| 83 | }, |
| 84 | { 0, PF_INET, IPPROTO_ICMP, 0, |
| 85 | icmp_input, 0, 0, 0, |
| 86 | 0, |
| 87 | 0, 0, 0, 0, |
| 88 | }, |
| 89 | { SOCK_DGRAM, PF_INET, IPPROTO_UDP, PR_ATOMIC|PR_ADDR, |
| 90 | udp_input, 0, udp_ctlinput, 0, |
| 91 | udp_usrreq, |
| 92 | udp_init, 0, 0, 0, |
| 93 | }, |
| 94 | { SOCK_STREAM, PF_INET, IPPROTO_TCP, PR_CONNREQUIRED|PR_WANTRCVD, |
| 95 | tcp_input, 0, tcp_ctlinput, 0, |
| 96 | tcp_usrreq, |
| 97 | tcp_init, tcp_fasttimo, tcp_slowtimo, tcp_drain, |
| 98 | }, |
| 99 | { 0, 0, 0, 0, |
| 100 | raw_input, 0, raw_ctlinput, 0, |
| 101 | raw_usrreq, |
| 102 | raw_init, 0, 0, 0, |
| 103 | }, |
| 104 | { SOCK_RAW, PF_INET, IPPROTO_RAW, PR_ATOMIC|PR_ADDR, |
| 105 | rip_input, rip_output, 0, 0, |
| 106 | raw_usrreq, |
| 107 | 0, 0, 0, 0, |
| 108 | } |
| 109 | #if NIMP > 0 |
| 110 | , |
| 111 | { SOCK_RAW, PF_IMPLINK, 0, PR_ATOMIC|PR_ADDR, |
| 112 | 0, rimp_output, 0, 0, |
| 113 | raw_usrreq, |
| 114 | 0, 0, hostslowtimo, 0, |
| 115 | } |
| 116 | #endif |
| 117 | #if NPUP > 0 |
| 118 | , |
| 119 | { SOCK_RAW, PF_PUP, 0, PR_ATOMIC|PR_ADDR, |
| 120 | 0, rpup_output, 0, 0, |
| 121 | raw_usrreq, |
| 122 | 0, 0, 0, 0, |
| 123 | } |
| 124 | #endif |
| 125 | }; |
| 126 | |
| 127 | #define NPROTOSW (sizeof(protosw) / sizeof(protosw[0])) |
| 128 | |
| 129 | struct protosw *protoswLAST = &protosw[NPROTOSW-1]; |
| 130 | |
| 131 | /* |
| 132 | * Operations on protocol table and protocol families. |
| 133 | */ |
| 134 | |
| 135 | /* |
| 136 | * Initialize all protocols. |
| 137 | */ |
| 138 | pfinit() |
| 139 | { |
| 140 | register struct protosw *pr; |
| 141 | |
| 142 | for (pr = protoswLAST; pr >= protosw; pr--) |
| 143 | if (pr->pr_init) |
| 144 | (*pr->pr_init)(); |
| 145 | } |
| 146 | |
| 147 | /* |
| 148 | * Find a standard protocol in a protocol family |
| 149 | * of a specific type. |
| 150 | */ |
| 151 | struct protosw * |
| 152 | pffindtype(family, type) |
| 153 | int family, type; |
| 154 | { |
| 155 | register struct protosw *pr; |
| 156 | |
| 157 | if (family == 0) |
| 158 | return (0); |
| 159 | for (pr = protosw; pr <= protoswLAST; pr++) |
| 160 | if (pr->pr_family == family && pr->pr_type == type) |
| 161 | return (pr); |
| 162 | return (0); |
| 163 | } |
| 164 | |
| 165 | /* |
| 166 | * Find a specified protocol in a specified protocol family. |
| 167 | */ |
| 168 | struct protosw * |
| 169 | pffindproto(family, protocol) |
| 170 | int family, protocol; |
| 171 | { |
| 172 | register struct protosw *pr; |
| 173 | |
| 174 | if (family == 0) |
| 175 | return (0); |
| 176 | for (pr = protosw; pr <= protoswLAST; pr++) |
| 177 | if (pr->pr_family == family && pr->pr_protocol == protocol) |
| 178 | return (pr); |
| 179 | return (0); |
| 180 | } |
| 181 | |
| 182 | pfctlinput(cmd, arg) |
| 183 | int cmd; |
| 184 | caddr_t arg; |
| 185 | { |
| 186 | register struct protosw *pr; |
| 187 | |
| 188 | for (pr = protosw; pr <= protoswLAST; pr++) |
| 189 | if (pr->pr_ctlinput) |
| 190 | (*pr->pr_ctlinput)(cmd, arg); |
| 191 | } |
| 192 | |
| 193 | /* |
| 194 | * Slow timeout on all protocols. |
| 195 | */ |
| 196 | pfslowtimo() |
| 197 | { |
| 198 | register struct protosw *pr; |
| 199 | |
| 200 | for (pr = protoswLAST; pr >= protosw; pr--) |
| 201 | if (pr->pr_slowtimo) |
| 202 | (*pr->pr_slowtimo)(); |
| 203 | } |
| 204 | |
| 205 | pffasttimo() |
| 206 | { |
| 207 | register struct protosw *pr; |
| 208 | |
| 209 | for (pr = protoswLAST; pr >= protosw; pr--) |
| 210 | if (pr->pr_fasttimo) |
| 211 | (*pr->pr_fasttimo)(); |
| 212 | } |